I don't think it would be in character for Raphael to nullify Wylls contract with Mizora, given
his little speech about order and the right way to do things before the bossfight with him
.
But I always wondered, why we couldn't make a deal with him or were tempted to at least to save the people in
the Last Light Inn. He was there, he knew it was dangerous and if we do far did go out of the way to save the tieflings, he could have offered to help us. As seen with Mol, he has the power to magic people away to BG unharmed.
That is of course only for a good player, for an evil one maybe more power or help
getting rid of Thorm, since it is likely, the Harper's are dead and Aylin too in that case